Paging transceivers and methods for selectively retrieving messages

ABSTRACT

A paging trasceiver and method for selectively paging provides a page to a paging transceiver but does not automatically provide an associated message. The paging transceiver receives the page and alerts the user that a message is waiting and preferably provides a short description of the message. The user can then download or otherwise act on the message at a time and at a place convenient to the user. The user can therefore place the paging transceiver in a location where it can easily receive and reply to the message. The paging system conserves air time and the paging transceiver conserves memory by not automatically receiving the associated messages. The user can determine the time at which the paging transceiver receives transmissions, such as during off-peak hours. The messages stored by the systems and delivered to the paging trasceiver may be of different types, such as voice, text, audio, or even video. In addition to messages, the paging system can store other information for the user, such as songs or video clips that the user can sample or updates on weather or stock rates.

This application is a continuation of U.S. patent application No.09/688,321, filed on Oct. 13, 2000 now U.S. Pat. No. 7,003,304, which isa divisional of U.S. patent application No. 08/934,143, filed on Sep.19, 1997 (Now U.S. Pat. No. 6,233,430). The content of the abovereferenced applications are incorporated herein by this reference.

RELATED APPLICATIONS

Reference is made to the following related issued patents: U.S. Pat.Nos. 6,259,892; 6,233,430; 6,087,956; 6,253,061; 6,462,646; 6,696,921and 6,459,360.

FIELD OF THE INVENTION

The present invention relates generally to paging transceivers andmethods for selectively acting on messages and, more particularly, topaging transceivers and methods for selectively retrieving messages.

BACKGROUND OF THE INVENTION

In general, a paging receiver can be classified into one of fourcategories: an alert or tone only paging receiver, a numeric pagingreceiving, an alphanumeric paging receiver, or a voice paging receiver.One common characteristic of all of these paging receivers is that theymonitor the air waves and notify the user when their particular addresshas been detected. For the alert or tone only paging receiver, thepaging receiver would generate a tone or beep when its address isdetected. The other paging receivers, upon detecting their address,would additionally store a message associated with the address signaland display or play it to the user. The message for a numeric pagingreceiver would be a set of numbers, typically the calling person'stelephone number, and the message for an alphanumeric paging receiverwould be a set of numbers and/or letters. The user of an alphanumericpaging receiver could therefore receive a message in the form of atelephone number with some descriptive text. For the voice pagingreceiver, the message that is stored is a voice message that the usercan later play to hear the message.

A paging receiver is typically a rather small electronic device and,accordingly, has a limited amount of memory for storing messages thathave been received from a base station in a paging system. Because ofthe relatively small size of the memory, the paging receiver can storeonly a limited number of messages. A user can delete messages frommemory but will oftentimes desire to save a message, such as temporarilyuntil the user makes a note of the message or until he or she is able torespond to the page. The messages that are saved in memory, however,reduce the space in memory that is available to receive new messages.This demand on space in memory is increasing as the size of the messagescontinue to grow and as users receive a greater number of messages.Although more memory can be added to accommodate more messages, theadded cost and space needed for extra memory runs counter to the desiresto keep the paging receiver small and inexpensive. A need thereforeexists for a paging receiver which can display and/or play messageswhile efficiently using memory.

In addition to the demand on paging receiver memory, paging systems willbe challenged as greater numbers of pages are being transmitted and asthe size of the transmitted messages increases. Initially, when pagingsystems were only concerned with transmitting address signals of thepaging receivers, the size of each transmission by the paging systemswas relatively small. Paging receivers and paging systems, however, haveundergone tremendous advances with paging systems now transmittingmessages which can be hundreds of kilobytes or greater in size inaddition to the address signals. Additionally, many paging receivers areactually paging transceivers which transmit acknowledgment signals backthrough the paging system. The capacity of the paging systems aretherefore being challenged not only by messages of increasing sizes butalso by reply signals transmitted from the paging transceivers to thepaging system. The future of paging systems is therefore tied to theability of the paging systems to control the number and size of the datatransmissions and to provide additional features without sacrificing thequality of service to the user.

As discussed above, many paging transceivers are able to issue a replyor acknowledgment back to the base station in response to a receivedmessage. If the base station does not receive this reply oracknowledgment, then the base station assumes that the message has notbeen received and will repeatedly transmit the message until the replyor acknowledgment is received. Due to the high power levels at which thebase station transmits its paging signals, the signals are usuallyeasily received by all paging transceivers located within the coveragearea of the base station antenna The paging transceivers, on the otherhand, must operate at lower power levels and often cannot transmitsignals at sufficiently high levels to reach the base station. Forexample, when a paging transceiver is located in a basement of abuilding, in a subway, or in an airplane, the paging transceiver may beunable to issue a reply that can reach the base station. As a result,the base station may continue to transmit a page to a paging transceiverand the paging transceiver will continue to receive the message but thebase station cannot detect the reply being issued by the pagingtransceiver. This unnecessary transmission of duplicate messages and theineffectual reply signals transmitted by the paging transceivers consumevaluable resources of the paging system and of the paging transceiver.

For safety reasons, a user may at times have to turn off his or herpaging transceiver. For instance, when the user is on an airplane, thetransmissions from the paging transceiver can interfere with theinstrumentation or communication within the cockpit of the plane. Thepaging transceiver therefore should not be operating within the plane oraround other electronic equipment that are sensitive to interferencefrom the signals transmitted by the paging transceiver. As anotherexample, if the user is in an environment that contains electronicdetonators for explosive materials, the signals transmitted by thepaging transceiver could possibly trigger an explosion. The usertherefore must turn his or her paging transceiver off to ensure that itdoes not transmit any reply or acknowledgment signals in response to areceived page. Although it may be dangerous for the pager transceiver toissue a reply signal in these situations, the signals transmitted by thebase station may at times be safely received by the paging transceiver.Since the paging transceiver automatically issues a reply in response toa received message, the paging transceiver must nonetheless be turnedoff so as to not pose a risk to the user. During these times that thepaging transceiver must be turned off, the user unfortunately is unableto receive any page or message. A need therefore exists for a pagingtransceiver that can notify a user of a message without automaticallygenerating a reply message or acknowledgment to the base station.

SUMMARY OF THE INVENTION

The present invention solves the problems described above with methodsand systems for selective paging. A paging system notifies a pagingtransceiver that a message has been received but does not initiallytransmit the associated message. The user, upon being notified of themessage, can then download the entire message at a time convenient tothe user, which allows the user to download messages at less-expensiveoff-peak hours and allows the user to place the paging transceiver at alocation where it can easily receive the message and reply to themessage. Since the messages are not initially transmitted to the pagingtransceiver, the paging transceiver can receive and store a greaternumber of pages with minimal increase in the size of memory. Further,because entire messages are not automatically transmitted and since theuser can position the paging transceiver to issue a sufficiently strongreply, traffic in the paging system can be controlled and actuallyreduced.

The system may transmit some identifying information about the page tothe user without sending the entire message. For instance, the basestation may identify the type of message, such as email, voice, or text,and also indicate the caller or other descriptive material about themessage. The user can then determine the priority of the message andwhether he or she wants to retrieve the message, play the message, erasethe message, store the message, forward, reply, or otherwise act on themessage. The user is also given control over the messages storedremotely from the paging transceiver and can erase or store thesemessages from the paging transceiver. The paging transceiver may have atimer for allowing the user to program the paging transceiver to performa desired function on a message at a particular time.

The information initially sent to the user may also indicate thelocation of the stored message. For instance, the system paging aparticular paging transceiver to notify it that a page has been receivedneed not be the system actually storing the content of the message.Instead, a plurality of systems may store the contents of messages withone or more of the systems paging the paging transceiver. The pagingtransceiver would be provided sufficient information on the systemstoring the message so that it can communicate with this system. Thesystem paging the paging transceiver can therefore act as aclearinghouse for other messaging systems by notifying a user of allmessages received regardless of their source or type.

Accordingly, it is an object of the present invention to provide pagingtransceivers and methods for paging that conserve memory in pagingtransceivers.

It is another object of the present invention to provide pagertransceiver and methods for paging that conserve valuable air time.

It is a further object of the present invention to provide pagertransceivers and methods for paging that provide users with remotecontrol over their messages.

It is yet another object of the present invention to provide pagertransceivers and methods for paging that allow users to select when andhow action should be taken on their messages.

It is vet a further object of the present invention to provide pagertransceivers and methods for notifying users of received messages.

It is also an object of the present invention to provide pagingtransceivers and methods for providing control to users over messagesstored at remote locations.

It is still another object of the present invention to provide pagertransceivers and methods that notify users of messages received frommultiple sources.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and form a part ofthe specification, illustrate preferred embodiments of the presentinvention and, together with the description, serve to explain theprinciples of the invention. In the drawings:

FIG. 1 is a block diagram of a paging transceiver according to apreferred embodiment of the invention;

FIG. 2 is a more detailed block diagram of the transceiver in the pagingtransceiver of FIG. 1;

FIG. 3 is a block diagram of a communication system according to apreferred embodiment of the invention;

FIGS. 4A and 4B are flow charts depicting an exemplary set-up routinefor establishing communications between the system of FIG. 3 and thetransceiver of FIG. 1;

FIG. 5 is a flow chat depicting a paging process;

FIG. 6 a flow chart depicting of process of notifying a pagingtransceiver of an unread message;

FIG. 7 is a flow chart depicting a process of receiving a page at thepaging transceiver of FIG. 1;

FIG. 8 is a flow chart depicting a process of selecting a function atthe paging transceiver of FIG. 1;

FIG. 9 is a generic flow chart depicting a selective process performedat the paging transceiver of FIG. 1 for executing a desired function;

FIG. 10 is a block diagram of a paging system having multiple systemsfor storing messages; and

FIG. 11 is a diagram of a data transmission for the system in FIG. 10.

DETAILED DESCRIPTION

Reference will now be made in detail to preferred embodiments of theinvention, non-limiting examples of which are illustrated in theaccompanying drawings. With reference to FIG. 1, a paging transceiver100 according to a preferred embodiment of the invention comprises anantenna 1, a transceiver 2, a user interface 3, a controller 4, and amemory 5. The single antenna 1 is preferably used for both receiving andtransmitting signals, although the paging transceiver 100 may comprise aseparate antenna for transmitting signals and a separate antenna forreceiving signals.

The transceiver 2 is connected to the antenna 1 and is for transmittingsignals from the paging transceiver 100 and for receiving signalsdirected to the paging transceiver 100. The signals that may betransmitted to, or received from, the paging transceiver 100 include,but are not limited to, such signals as selective call signals, commanddata signals, signals corresponding to a message, and information datasignals. The transceiver 2 may comprise a transceiver found in two waypagers or mobile radios and preferably comprises a transceiver commonlyused in a portable mobile radiotelephone.

The transceiver 2 is connected to the user interface 3, which containsall necessary input and output devices. The user interface 3 includes amicrophone, speaker, alert transducer, LED or LCD display, keypad, andnecessary switches. The user interface 3 may also contain other types ofinput/output devices depending on the messaging application, such as avideo display, camera, scanner, a printer, or a voice recognitiondevice. The user interface 3 is not limited to these examples of userinput/output devices but may comprise any input or output device whichallows or assists communication between the user and the pagingtransceiver 100.

The transceiver 2 is connected to, and communicates with, the controller4. which preferably comprises a digital signal processor (DSP) 4. Thememory 5 is connected to the DSP 4 and is for storing messages or othertypes of information. The memory 5 may comprise static RAM, Dynamic RAM,Flash RAM, or any type of memory suitable for storing messages andallowing the retrieval of the messages. The amount of the memory 5 ispreferably at least 4 MB for voice or text applications, although it mayconsist of a greater or lesser amount depending upon the specificmessage type application.

The transceiver 2, as shown in more detail in FIG. 2, includes anantenna interface 20 connected to the antenna 1 The antenna interface 20directs signals received from antenna 1 to a receiver section 21 of thepaging transceiver 100 and directs signals transmitted from a transmitsection 24 to the antenna 1. The antenna interface 20 is preferably aduplexer, however an antenna switch or other device may be utilized toprovide signal isolation between the receiver and transmitter sections21 and 24. Alternatively, if paging transceiver 100 includes twoantennas 1 with one for transmitting signals and the other for receivingsignals, the transceiver 2 would not require any type of antennainterface 20.

The receive section 21 includes a receiver 22 and a receiver frequencysynthesizer 23. The receiver 22 is connected to the antenna 1 throughantenna interface 20 and receives the signals directed to the pagingtransceiver 100. The receiver frequency synthesizer 23, based on aninput from a processor 27, selects the frequency at which the receiver22 receives signals. The received signals are passed from the receiver22 to the processor 27.

The transmit section 24 includes a transmitter 25 for receiving signalsfrom the processor 27. The transmit section 24 also includes atransmitter frequency synthesizer 26 connected to the transmitter 25which, based upon an input from the processor 27, selects the transmitfrequency for the transmitter 25. The signals output by the transmitter25 are supplied to the antenna interface 20 and then to the antenna 1.

The processor 27 comprises a central processing unit (CPU) havinginternal memory and switching capabilities. The CPU 27, for instance,comprises all necessary RAM and ROM memory, signal and data switchingcircuitry, signal processing circuitry, I-O Ports, and all standardprogram instructions and stored options commonly utilized in portablecellular telephones. The standard cellular telephone programinstructions and CPU 27 may be obtained from a variety of suppliers. Forinstance, the instructions may be obtained from Wireless Link Inc. ofSunnyvale, Calif. and the CPU 27 from GEC Plessey Semiconductor, Inc. ofScotts Valley, Calif.

The DSP 4 includes necessary I-O and program memory and are commonlyutilized in cellular telephones. Any suitable DSP may be used in thepaging transceiver 100. Alternatively, the controller 4 may compriseanother type of electronic device, such as a codec ordigital-to-analog/analog-to-digital conversion circuit or other type ofmodulator-demodulator including memory interface circuitry coupled tomessage memory 5 for reading and writing of messages.

The transceiver 2 also preferably includes a delay circuit 28. The delaycircuit 28 may comprise a timer which informs the processor 27 of when aperiod of time has expired. The timer, for instance, may expire at acertain time of day, week, or month, or may expire a fixed period oftime after a triggering event, such as one hour after the event. Thetime at which the timer 28 expires is preferably programmable throughthe user interface 3 and through processor 27. Additionally, the timer28 preferably comprises a plurality of timers for notifying theprocessor 27 of when a plurality of different time periods have expired.Rather than a timer, the delay circuit 28 may alternatively operate todelay the occurrence of an event until a certain condition is satisfied.This condition, for instance, may be the strength of received signals orthe receipt of a specified signal. The purpose of the timer 28 willbecome apparent from the description below.

With reference to FIG. 3, a system 30 according to a preferredembodiment of the invention is interconnected to a base station 34, bothof which are connected to the Public Switched Telephone Network (PSTN)or to other telephone company equipment 35. The system 30 comprises apaging terminal controller 31 which may comprise a controller circuitand associated memory having a database of subscriber listings andcorresponding selective call address fields. The paging terminalcontroller 31 communicates with storage and retrieval unit 32 andcorrelates messages with subscriber listings. The storage and retrievalunit 32 may comprise a CPU or control circuit, message information andprogram memory, memory interface circuitry and a DSP with appropriateoperational code for storage and retrieval of the desired messages. Theinput/output controller 33 contains all necessary input and outputcircuitry such as encoders and decoders, modems and required routing andcontrol circuitry for communicating with the paging terminal controller31, the storage and retrieval unit 32, the PSTN 35, and the base station34.

A call setup routine 40 for establishing communication between thesystem 30 and base station 34 will now be described with reference toFIGS. 4A and 4B. At step 41, a connection, such as a telephoneconnection, is routed through the PSTN 35 or in the case of pagingtransceiver 100 the switch 36, to the input/output controller 33. Theinput/output controller 33 determines at step 42 whether the connectionis with an automated signaling device or with a person. If theconnection is with a person, then at step 48 the storage and retrievalunit 32 is activated to produce one or more voice responses during thecall in order to guide the person throughout the process.

If, at step 42, the input/output controller 33 determines that the callis from a device, such as a paging transceiver 100 or computer terminal,data is exchanged between the paging transceiver 100 and system 30 atstep 43. The type of data that may be exchanged includes, but is notlimited to, the following types of data: identification data, commanddata, and information data. The data supplied from the PSTN 35 may alsobe exchanged at step 43 with this data including data for identifyingthe caller and subscriber, such as, for example, Caller ID and DNIS(Dialed Number Identification Service). Additionally, the data may beextracted from the base station 34. For example, the location of thepaging transceiver 100 may be determined from a home location registry(HLR) and the HLR data may be utilized by the system 30 in order todetermine the location of the paging transceiver 100, as opposed tohaving the paging transceiver 100 supply the location information tosystem 30.

After data is exchanged at step 43, the system 30 determines at step 44whether an error occurred during the transmission between the system 30and paging transceiver 100. If an error did occur, then at step 47 theprocess ends and the paging transceiver 100 is informed of the error.The error is preferably presented to the user in the form of statusinformation produced at the user interface 3, such as with an alert toneor visual display on the LED or LCD display. An error may include, butis not limited to, the following errors: “system busy,” “wrong ID,” or“bill over due.” If no error is detected, as determined by the system 30at step 44, a function is enabled and executed at step 45. The function,as will be described in greater detail below with reference to FIG. 8,may be selected by the user from a group of available functions. At step46, housekeeping functions are performed both at the paging transceiver100 and at the system 30 and the call is terminated at step 47.

If the call is from a person as determined at step 42, then the calleris provided with a voice response at step 48 and, with reference to FIG.4B, the caller is then verbally prompted at step 49 to enterinformation. At step 50, the caller sends data to the system 30, such asby pressing the telephone keypad to generate DTMF tones. The data thatmay be sent by the caller includes, but is not limited to, ID code, passcode, mail box number, and subscriber number. The system 30 may respondto voice commands from a caller by utilizing a readily available voicerecognition system, such as those presently in use by the telephonecompany to except collect calls. At 51, the system 30 determines whetheran error has occurred. If an error is detected, the caller may be givenan opportunity to correct the error or, as shown, the process may end atstep 56. If no error was detected by the system 30 at step 51, amessage, such as a voice message, is recorded and stored in the storageand retrieval unit 32 at step 52. At step 53, the system 30 determineswhether a return receipt or a reply message is requested. If a returnreceipt or reply message is requested, the return address is entered bythe caller or optionally issued by the system 30 and is stored by thesystem 30 in the storage and retrieval unit 32 at step 54. The system30, for instance, may detect the address signal of the incoming calland, by default, store this number as the return address. After thereturn address is stored at step 54 or if a return address is notrequested, the stored message is cross referenced to selective call datacorresponding to the intended paging transceiver 100 at step 55 . Alsoat step 55, a flag is set in a transmission stack file at the pagingterminal controller 31 for subsequently transmitting selective callsignals representative of the selective call data to the targeted pagingtransceiver 100. Housekeeping is performed by the system 30 and the callends at step 56.

The base station 34, as shown in FIG. 3, comprises a switch 36, atransceiver antenna 37, and a transceiver base station 38. In responseto a received message, the system 30 passes control information toswitch 36 for setting up a page call. The switch 36, for instance, maybe a mobile telephone switching office (MTSO) for interfacing to thetransceiver base station 38. In the send page mode, selective callsignals having an address associated with the paging transceiver 100 aretransmitted. The address may be an address code for a pagingtransceiver, a mobile telephone number (MIN) for a mobileradiotelephone, or type of identifying information for a communicationdevice.

Command data and information data may also be communicated from thesystem 30 to the paging transceiver 100 through the base station 34. Thecommand data and information data shall hereinafter be referred to as CIdata, examples of which include the following: paging transceiverlocation, forward message, retrieve message, reply to message, pagingtransceiver ID, message identifiers, retrieval instructions, savemessage, erase message, message type, message length, time/date messagereceived, system 30 ID, system 30 location, message address, messagelocation, battery life, message identifier, format code, compressiontype, message age, message priority, alert codes, energy savingcommands, memory status, program data, provisioning data, acknowledgmentdata and requests, function codes, sender name, current time, number ofmessages, mailbox number, phone number, return address, alpha numericshort messages, general command requests, group calls, and signalstrength.

The address and command data and information may be transmitted over anysuitable communication system. For instance, the data may becommunicated over a paging system, a cellular system having shortmessage service capabilities, such as GSM-SMS, a Cellular Digital PacketData (CDPD) system, Personal Communications Services, or any other typeof mobile radiotelephone system or communication system. Furthermore,the paging transceiver 101 preferably is able to communicate over morethan one system, such as with both a paging network and a mobileradiotelephone network.

With reference to FIG. 5, a flow diagram 60 for performing a page callis shown. At step 61, the system 30 locates the current message flagfrom its transmission stack within paging terminal controller 31 andcommunicates with base station 34 for setting up a page call. The basestation 34 transmits selective call signals and CI data to the targetedpaging transceiver 100. At step 62, the system 30 determines whether anacknowledgment (Ack) was received from the paging transceiver 100indicating that the page call was received. If an acknowledgment was notreceived, then at step 70 the system 30 determines whether anacknowledgment is a system 30 option. If an acknowledgment is required,then at step 71 the system 30 assigns the page call a priority in thetransmission stack and eventually returns to step 61 forre-transmission. If the acknowledgment is received at step 62, thesystem 30 sets an acknowledgment flag (Ack flag) corresponding to thestored message.

If an acknowledgment is not a system requirement, as determined at step70, or after posting the acknowledgment flag at step 63, the system 30sets a timer at step 64 and waits a period of time before proceeding tostep 65. At step 65, the paging terminal controller 31 determines if thestored message has been read. If the message has been read, then at step66 the system 30 posts a read flag in the subscriber data base toindicate that the message was delivered and read and at step 67 theprocess ends.

If, at step 65, the message had not been read, then at step 68 thesystem 30 determines the priority of the message and proceeds to step69. If the priority is high, as determined at step 69, then at step 61the page call is returned to the transmission stack at the designatedpriority level for re-transmission. If, on the other hand, the priorityis not high as determined at step 69, then the message has a lowpriority and the process ends at step 67.

An alternate routine 80 for notifying a paging transceiver 100 that anunread message is waiting is shown in FIG. 6. At step 81, the pagingterminal controller 31 sorts through subscriber listings which have acorresponding unread and unnotified message in the storage and retrievalunit 32 and sends a page request to base station 34. At step 82, theswitch 36 checks a home location registry (HLR) to determine theregistered location and status of the remote paging transceiver 100. Apage call is processed by transmitting selective call signals fromtransceiver base station 37 at step 82. If a page acknowledgment isdesired for verification that the paging transceiver 100 recipientreceived the selective call signals, an Ack signal is manually orautomatically transmitted from the paging transceiver 100 to basestation 34 for storage in the subscriber database of paging terminalcontroller 31 at step 82.

At step 83, if an acknowledgement signal was received, a notified flagis set in the subscriber data base corresponding to the unread messagestored in the storage and retrieval unit 32 and the paging process forthe current unread message ends at step 84. If at step 83 anacknowledgment signal was not received, the message is assigned a newpriority and the process is subsequently repeated. Optionally, aplurality of priorities may be assigned to acknowledged and notacknowledged unread messages so that the paging transceiver 100 is senta number of calls until the message is read by the subscriber.

In the preferred embodiment, the base station 34 is part of a mobileradiotelephone network and the paging transceiver 100 is paged over thedesignated paging channel or the control channels of the network. Inaddition to paging the paging transceiver 100, the short messages orother data transmitted to the paging transceiver 100 is also preferablytransmitted over the paging channel or control channels. Although thepaging is preferably performed through a mobile radiotelephone network,the selective call signals may alternatively be routed to a pagingsystem for transmitting an address code and CI data over an independentpaging transmitter. In such a configuration, the paging transceiver 100may be configured to have a separate paging receiver or transceivercompatible with the paging transmitter or paging transceiver. Sinceradio pager devices require much less energy than portable cellulartelephones, a paging transceiver 100 configured with a low energy pagingreceiver would reduce energy required for receiving selective callsignals and allow high energy circuitry of the paging transceiver 100 tobe turned off until the user needs to retrieve or transmit messages.Other variations and modifications will be apparent to those skilled inthe art.

A process 90 for receiving messages at a paging transceiver 100 is shownin FIG. 7. A selective call signal including an address is received byreceive section 21 of the transceiver 100 at step 91. At step 92, thedemodulated signal is processed by the CPU 27 to compare the receivedaddress with an address code stored in the CPU 27 memory. If thereceived address code does not match the stored address, flow returns tostep 91 and the transceiver 100 continues to monitor transmissions forits address. When the address corresponds to the pre-stored addresscode, as determined at step 92, the CPU 27 stores and processes anycorresponding received CI data at step 93.

Next, at step 94, the CPU 27 determines if an acknowledgmenttransmission is required by the paging transceiver 100. The CPU 27 mayalways enable an acknowledgment in order to confirm at the system 30 orbase station 34 that the selective call signals were received by thetargeted paging transceiver 100. Alternatively, the CPU 27 may neverenable an acknowledgment from the transceiver 100, which is useful inexplosive environments where transmissions are dangerous and inenvironments where a reply from the paging transceiver 100 may causeharmful interference to other electronic equipment. The CPU 27 may, asanother option, enable an acknowledgment only when acknowledgment datais contained within the received CI data, such as with a remote request.Finally, the CPU 27 may enable an acknowledgment in response to auser-enabled command.

Returning to step 94, if the paging transceiver 100 allows for anacknowledgment then at step 95 the CPU 27 determines whether theacknowledgment is required or if the acknowledgment is a user option. Ifthe acknowledgment is required to be automatic, then an acknowledgmentflag is set at step 97. If, on the other hand, the acknowledgment is notautomatic but rather optional, then at step 96 the CPU 27 determineswhether an acknowledgment has been enabled. If the acknowledgment hasbeen enabled, then the acknowledgment flag is set in step 97.

At step 98, the CPU 27 determines whether short messages may betransmitted. Short messages may include CI data or any type of shortcoded message which was pre-stored by the user in the paging transceiver100. If short messages are enabled, at step 99 the CPU 27 sets the shortmessage flag. At step 100, the paging transceiver 100 transmits allflagged data, including CI data, to the base station 34 for processingby the system 30. The CPU 27 generates status information correspondingto received CI data and passes any necessary user status information tothe user interface 3 for visual and/or audible reception by the user.For example the user may hear an alert beep, feel an alert vibration,view an LCD indicating the number of unread messages, view an animatedgraphic display, hear a synthesized voice indicating that an urgentmessage is waiting, or receive other types of indications. At step 101,the CPU 27 performs house keeping functions and the routine ends.

FIG. 8 depicts a user function flow diagram 110 for user selectablefunction requests at the paging transceiver 100. At step 111, the userselects a function to be performed from available functions 112 to 117.These functions are exemplary functions that may be available andadditional functions may exist. One or more of these functions arepreferably selected through the user interface 3. One or more messagesmay be selected by the user to be forwarded to one or a plurality ofaddresses or recipients at step 112. Items such as messages and sendmessage lists may be selected by scrolling through the message number orname. The selected messages for forwarding may reside at the pagingtransceiver 100 or at the system 30. The user may also select thefunction of saving a selected message at step 113. At step 114, selectedmessages are retrieved for reproduction and/or storage. At step 115messages may be sent to one or a plurality of recipients, such as toanother paging transceiver 100. At step 116, the selected message may beerased and at step 117, a reply may be sent to the originator of aselected message. With any of the functions selected at steps 112 to117, the system 30 may act upon the entire information or,alternatively, may instead operate on only the message identifier. Forinstance, if the user selected the desired action of forwarding amessage, the system 30 may send the entire message to a designatedrecipient or may instead send just the message identifier.

FIG. 9 depicts processing performed by the paging transceiver 100 inresponse to the selection of any one of the functions 112 to 117 shownin FIG. 8. At step 131, the function is identified by the CPU 27 andother processing occurs prior to step 132 where the CPU 27 determineswhether a call is required. If a call is not required to perform thefunction, then at step 133 the CPU 27 performs the requested functionand the process ends at step 140.

If, on the other hand, a call is required, then at step 134 the CPU 27next determines whether a call is already in progress. If a call is inprogress, the CPU 27 exchanges data with the system 30 and base station34 at step 135 and the function is performed or executed at step 136.The data that is exchanged at step 135 includes a request signal that issent from the paging transceiver 100 to the system 30 specifying thedesired action and the particular information or message. If a call isnot in progress, then at step 137 the CPU 27 preferably asks the user ifa call should be made and receives the user's feedback at step 138. Ifthe user elects not to call, then a delay occurs at step 141 with delaycircuit 28.

As discussed above, the delay circuit 28 may be a timer which expires ata set time, such as at 1:00 a.m., when traffic and costs are low or mayexpire after a period of time, such as 1 hour. The set time or theperiod of time may be programmed by the user or may be determined bydefault values. Additionally, the delay circuit 28 may operate to delayoperation until the signal strength is above a certain threshold. Thedelay circuit 28, in this example, may therefore comprise a leveldetector and a comparator circuit for comparing the signal strength tothe threshold level. The delay circuit 28 would therefore advantageouslydelay the paging transceiver 100 from initiating communication untilsignal strength is sufficiently high. Moreover, the delay circuit 28 mayalternatively comprise a communication monitor circuit for determiningwhen the paging transceiver 100 is communicating before performing afunction. Also, the delay circuit 28 may detect transmissions andtrigger a certain event in response to a received communication. As anexample, if the paging transceiver 100 receives a certain type ofmessage or a message from a particular source or individual, the pagingtransceiver 100 may automatically perform a programmed action. Thepaging transceiver 100 would therefore be able, for instance, toautomatically forward all messages received from one recipient to adesignated person.

After the timer 28 is triggered or if the user decides to call now, thenat step 139 the CPU 27 sets up a call to the base station 34. Once acall is established, then processing proceeds to step 135 for theexchange of data and then to step 136 for the performance or executionof the function. At step 140, the process ends. The process shown inFIG. 9 is not limited to the performance of a single function but alsorepresents the processing if the user selects a number of functions. Forexample, the user may select the functions of retrieving a message atstep 114 and forwarding a message at step 112 and these functions may beperformed in unison with each other or sequentially one after the other.

The paging transceiver 100 and system 30 may exchange status informationduring messaging calls initiated by the paging transceiver 100 or byselective call, such as page calls, initiated by the system 30. Thestatus information may contain information corresponding to messagesstored within the paging transceiver 100 or within the system 30. Forexample, if the system 30 erases a message that has resided in itsmemory for too long a period of time, such as an unsaved, read message,the system 30 may inform the paging transceiver 100 that the message nolonger exists. If the message identifier stored in the pagingtransceiver 100 no longer corresponds to a message stored in the system30 or in the paging transceiver 100, the CPU 27 removes the identifierfor the no-longer existing message.

When the forward message function 112 is selected, flow proceeds to step131 where the CPU 27 reads information pertaining to the message orplurality of messages selected by the user to be forwarded. Theinformation may include a message identifier, location data, messagelength, message type, destination addresses, or other CI type data aspreviously described. At step 132, the CPU 27 determines whether themessage cannot be forwarded without communicating with the system 30. Atstep 134, the CPU 27 determines if a call is in progress. If a call isin progress, CI data is exchanged at step 135 with the system 30 forforwarding messages. If the messages to be forwarded are located at thesystem 30, the messages are simple flagged for forwarding to theappropriate addresses. At step 136, the messages are forwarded andconfirmation is communicated to the paging transceiver 100. If themessage is not located at system 30, the message is transmitted from thepaging transceiver 100 to system 30 at step 136 and the process ends atstep 140. If at step 134, it is determined that a call is not inprogress, the user is asked if the message should be forwarded now atstep 137. If at step 138 the user selects yes, a call is establishedwith system 30 at step 139 and flow continues as previously described.If at step 138 the user responds that a call should not be made, the CPU27 keeps the forwarding information in memory for forwarding the messageduring a subsequent call with system 30 and a delay occurs at step 141with delay circuit 28, as described above. After the delay, a call isestablished with system 30 at step 139 and flow continues as previouslydescribed. The process ends at step 140.

In operation, the user selects a message or messages to be forwarded andalso selects a recipient for receiving the message. If the messageresides at the system 30, the message is simply forwarded to theaddressed recipient. If the message is located in the paging transceiver100, the message is first transmitted to the system 30 at step 135before it can be forwarded to the intended recipient. In order toconserve time, the system 30 will not accept receipt of a message fromthe paging transceiver 100 if the same message already exists at thesystem 30. The system 30 will simply perform the required function withthe already present duplicate message.

If the function selected is the save message function 113, then at step131 the message identifier to be saved is read by CPU 27. At step 132,the CPU 27 determines if the message identifier selected corresponds toa message already stored in message memory 5 and if the selectedfunction can be processed off-line. If yes, at step 133 the CPU 27 setsa save message flag in order to protect the message stored in messagememory 5 from being over-written and the process ends at step 140.

If at step 132 the CPU 27 determines that the message is not stored atthe paging transceiver 100, then at step 134 the CPU 27 determineswhether a call is in progress. If a messaging call is in progress, CIdata instructing the system 30 to save the message is sent. The system30 flags the stored message and sends a message saved acknowledgment tothe paging transceiver 100 at step 136. The CPU 27 converts theacknowledgment to status information and informs the user that themessage is saved at the system 30 and the process ends at step 140. Ifat step 134, it is determined that the paging transceiver 100 is notcurrently in communication with the system 30, the CPU 27 flags themessage identifier for saving and the user is asked if the call shouldbe made now at step 137. If no, at step 138 the flag is kept fortransmission to system 30 at a later time. A delay occurs at step 141with delay circuit 28 as described above. After the delay, a call isestablished with system 30 at step 139 and flow continues as previouslydescribed. Transmission to system 30 may also take place at a latertime, such as during a selective call to the paging transceiver 100 orduring a messaging call to system 30. If yes, then the CPU 27 sets up acall at step 139 for transmitting the save flag and CI data aspreviously described.

When the retrieve message function is selected at 114, then at step 131the message identifiers corresponding to messages to be returned areread from the CPU 27 memory for retrieving the message. Additionally,the CPU 27 may read message location information, system ID information,address information, message length information, and/or message typeinformation as previously described. At step 132, the CPU 27 determinesthe location of the message and determines if a call to system 30 isrequired. If the message is stored in message memory 5, then at step 133the CPU 27 retrieves the message. The message, for instance, may be anaudio message, visual message, text message, or electronic signalintended to be transferred to another device.

At step 132, if the message does not reside in message memory 5, the CPU27 determines that a call is required to retrieve the message and, atstep 134, determines if a call is in progress. If a call is in progress,CI data, such as which messages to retrieve, message length, messagetype, and message identifier, is exchanged at step 135. At step 136, themessage is retrieved and simultaneously stored in message memory 5 bythe DSP 4. The appropriate status information corresponding to themessage is stored by the CPU 27 in its memory and the process ends atstep 140. If at step 134 a call is not in progress, the user is asked ifthe call should be made now or if during another call at step 137. Atstep 138, if the user chooses to place the call, the call is set up at139. If the user chooses to delay the call at step 141 until anothersession or some later time, the message is left flagged for retrieval atthe next session or some later time and the process ends at step 140.With the timer 28, the message may be retrieved at a chosen time or aretrieval instruction may be sent from system 30 to paging transceiver100 for causing the paging transceiver 100 to automatically retrieve amessage or plurality of messages at a time designated by system 30. Forexample it may be desirable to have emergency weather informationautomatically retrieved during night-time hours when telephone linecharges and air time charges are less expensive. The above describedoptions may also be utilized for forwarding messages, erasing messages,saving messages, sending messages, and replying to messages as will beshown in more detail hereinafter.

With the send message function 115, in order to send a message, themessage must first be stored at the paging transceiver 100 or at thesystem 30. The process of storing or recording messages is well know tothose of ordinary skill in the art and accordingly will not be describedin further detail. Examples of these devices are described in U.S. Pat.No. 4,602,129 to Matthew, et al., titled “Electronic AudioCommunications System With Versatile Message Delivery,” and in U.S.Reissued Pat. No. Re. 34,976 to Helferich et al, titled “Analog/DigitalVoice Storage Cellular Telephone,” both of which are incorporated hereinby reference. The system 30 and paging transceiver 100 can record, storeand retrieve a plurality of different types of messages as previouslydescribed depending on the application required.

If the send message function 115 is selected, the CPU 27 identifies themessage to be sent and cross references it to the selected recipientaddress information. At step 132, the CPU 27 determines whether a callis required. The subsequent processing of sending a message should beapparent from the description above for forwarding a message andaccordingly will not be duplicated in order to simplify description ofthe invention. The message to be sent may reside in the pagingtransceiver 100 or in the system 30. If the message resides in thesystem 30 and in, the paging transceiver 100, the message in the system30 corresponding to the CPU 27 message identifier will be sent in orderto conserve air time. If the message does not reside in system 30, themessage will be sent from the paging transceiver 100 to the system 30.If the message is to be sent from the paging transceiver 100, themessage may be a pre-stored message or alternatively, the message may betransmitted to system 30 by paging transceiver 100 in real time during acall session between system 30 and paging transceiver 100.

If the erase message function is selected at step 116, the erase messagefunction allows a user to erase messages stored at the system 30 or atthe paging transceiver 100 depending on the mode of operation. A messagemay be erased at a paging transceiver 100 without erasing the messageidentifier. If a message is erased at the paging transceiver 100 and theidentifier still exists in message memory 5, the message can beretrieved from the system 30. In order to remove a message identifier atthe paging transceiver 100, the message must be erased at the system 30.This feature causes the user to manage the messages at the platform,thereby conserving memory space at the storage and retrieval unit 32. Atstep 131, the selected message to be erased is identified and the useris asked if the selected message in the paging transceiver is to beerased or if both copies of the message are to be erased. If the localmessage only is selected to be erased, the message identificationinformation is kept and at step 133 the CPU 27 flags the message storedin memory 5 for erasure or overwriting. In other words, the messagestill exists but may be over-written by another message when memoryspace is required and, until then, may be retrieved from message memory5. If at step 132 a decision was made to erase both copies of themessage, then at step 134 the CPU 27 determines if a call is inprogress. If yes, at step 135 the CI data is exchanged instructingsystem 30 to erase the message. At step 131, the system 30 transmits anacknowledgment that the message was erased, the CPU 27 flags the localmessage for erasure, the identifier is removed and both copies of themessage and the identifiers are erased.

If at step 134 the CPU 27 determines that a call is not in progress, theCPU 27 at step 137 erases the local message and the user is asked if thesystem 30 copy of the message needs to be erased now. If the userresponds yes at step 138, the call is established at step 139 and theprocess continues as previously described. If the user responds no atstep 138, the necessary flags are set for erasing the remote messageduring the next communication with system 30 after the delay of step 141and the timer 28 is activated. The timer 28 may be utilized for a timederase of the message stored at system 30.

The message reply function 117 is for sending a reply to an alreadyreceived message. A reply message utilizes the same process as the sendmessage function except that a return address is already correlated tothe message targeted for a reply. During the send message function 115,the user is required to select an address or destination for the messageto be sent. In other words, the user must know the destination oraddress in advance. The message reply function 117 does not require thatthe user know the address of the recipient because the message beingreplied to has a corresponding return address. As with the send messagefunction 115, a reply message may be sent in real time or it may bepre-recorded and stored in the paging transceiver 100 for transmissionto system 30. Additionally, the reply transmission may be delayed for aset period of time as previously described with timer 28.

In summary, as discussed above with reference to FIGS. 5 and 6, thesystem 30 does not transmit the entire message to the paging transceiver100 but rather notifies the user that a message is waiting. The pagingtransceiver 100, as discussed above with reference to FIG. 7, storesdata associated with the page and possibly a short message. The user canthen select a desired one of plurality of available functions, such asthose shown in FIG. 8, and the paging transceiver 100 will process therequest in accordance with FIG. 9.

With the system 30 and paging transceiver 100, the paging transceiver100 can notify a user of a message without receiving the entire message.The user can then decide to act upon the message at a time convenient tothe user. Rather than receiving the message with the alert, as occurswith conventional paging receivers, the user can control the time whenhe or she wants to receive a message and may even decide not to retrievethe message. After the user has been notified, the user can then controlthe paging transceiver 100 to retrieve the message from the system 30,to save the message at either the system 30 or paging transceiver 100,to forward the message to an indicated recipient, to reply to themessage, or to erase the message from the paging transceiver 100 or fromthe system 30.

With paging trasceiver 100, the user can position the paging transceiverin a desired location before initiating communication with the system30. Thus, if the user is paged by system 30 while the user is in asubway, basement, or on an airplane, the user can postpone the deliveryof the message until the paging transceiver 100 is in a better locationto receive and reply to the message. Similarly, the user may be in anexplosive environment or near sensitive electronic equipment and maypostpone delivery of the message and a reply from the paging transceiver100 until the user is out of the explosive environment or far enoughaway from the sensitive electronic equipment. The paging transceiver 100and system 30 therefore give the user control over the messages storedin the system 30.

The paging transceiver 100 and system 30 conserve both valuable air timeand also paging transceiver message memory 5. The system 30 does notautomatically deliver each message to the intended paging transceiver100 but instead allows the user to exercise control over the message.Since a message may be many bytes in length, perhaps kilobytes,megabytes, or even greater, the benefit to the system 30 and to the basestation 34 in not having to transmit each message can be quitesubstantial. Also, since each message is not automatically delivered tothe paging transceiver 100, the paging transceiver 100 does not becomeoverloaded with messages and instead the user can choose to act onselective messages, such as by retrieving only certain messages. Theuser, additionally, may decide not to act on any of the messages throughbase station 34 and may call the system 30 through the PSTN 35, therebybypassing the base station 34 and its associated charges and expenses.

The paging transceiver 100 and system 30 are not limited to voicemessages in a paging system. Rather, the paging transceiver 100 andsystem 30 may operate with any type of message or information,including, but not limited to numeric messages, alphanumeric messages,voice or other audio messages, video messages, graphics or even data.The paging transceiver 100 may be a separate paging transceiver, may beintegral with a mobile radiotelephone, or may be incorporated into otherdevices.

For instance, the paging transceiver 100 may be integrated into aportable radio, CD, or tape player. The paging transceiver 100 couldreceive messages from system 30 which indicate portions of songs thatmay be sampled by the user. The user may browse through a listing ofavailable music and select a desired song. The paging transceiver 100then communicates with the system 30 to retrieve the selected song andthe user can then play the song at the paging transceiver 100.

As another example, the messages may be video messages which the usercan browse through and select only desired messages. The pagingtransceiver 100 may be integral with a television set and the videomessages may be promotions for new movies or shows. Alternatively, thepaging transceiver 100 may be integral with a game console and the videomessages may be clips of new games that are available with that gameconsole. Other applications for the paging transceiver 100 and system 30will be apparent to those skilled in the art.

The information or message available to a paging transceiver 100 neednot be static but instead may be dynamic. In other words, when a pagingtransceiver 100 is alerted that information is available, theinformation may be updated or otherwise change from the time that theuser was alerted. As an example, the user may receive a weather alertand by the time the user decides to receive the information theinformation would be updated to reflect current weather conditions. Theidentifier for the information therefore does not limit the content thatmay be stored as the information available to the user.

The system 30 is not limited to transmitting only one alert at a time toone paging transceiver 100. Instead, the system 30 may send a pluralityof alerts to a single paging transceiver 100 and each of those alertsmay be broadcast to a plurality of paging transceivers 100. Forinstance, the system 30 may broadcast information to a plurality oftransceivers 100 that share a common set of numbers within their mobileidentification numbers. If the system 30 sends a plurality of alerts toa paging transceiver 100, these alerts may be displayed by the userinterface 3 and the user can scroll through and act upon the messages asdesired.

As discussed above, the system 30 and paging transceiver 100 allowsinformation to be remotely acted upon by the paging transceiver 100. Thesystem 30, however, also allows users access to their information viaconventional ways, such as the PSTN 35. Therefore, a user may receivethe alert with a paging transceiver 100 and decide to call in throughthe PSTN 35 to listen or otherwise act upon the message. The system 30preferably is connected to the Internet whereby users can also gainaccess and act upon their information via the Internet.

The paging transceiver 100 preferably alerts the user both when amessage identifier signal has been received and when complete messageshave been received. The alerts may comprise any suitable indication toinform the user that the paging transceiver 100 has received acommunication, such as a tone, vibration, or visual display. The alertsfor a received identifier and for a received message are preferablydifferent so as to allow a user to easily differentiate between the twocommunications.

The example provided in FIG. 3 was a single system 30 for storingmessages on behalf of a plurality of paging transceivers 100. Theinvention, however, may include any number of systems 30 for storingmessages with each system 30 storing information for a transceiver 100being considered a content provider. For instance, as shown in FIG. 10,a messaging system 200 may comprise a plurality of systems 30 connectedto the PSTN 35 with system 30A being associated with base station 34Aand transceiver antenna 37A and system 30B being associated with basestation 34B and transceiver antenna 37B. Although three systems 30 areshown, the system 200 may include any number of systems 30 and, althoughtwo base stations 34 are shown, each system 30 may be associated with abase station 34 and transceiver antenna 37 or only one of the systems 30may be associated with a base station 34 and transceiver antenna 37.Furthermore, each system 30 need not include a paging terminalcontroller 31 or a storage unit 32. System 30C, for instance, mayinclude a storage and retrieval unit 32 and input/output controller 33but not a paging terminal controller 31 and may page the pagingtransceiver 100 through the paging terminal controller 31 in system 30A.Conversely, a system 30, such as system 30A, may include a pagingterminal controller 31 and an input/output controller 33 but not astorage and retrieval unit 32. Further, the input/output controller 33need not be a separate unit but may be incorporated into the pagingterminal controller 31 if the system 30 does not include a storage andretrieval unit 32, or into the storage and retrieval unit 32, if thesystem 30 does not include a paging terminal controller 31. The systems30 and base stations 34 may communicate with each other through the PSTN35 or through links or lines other than or in addition to the PSTN 35,such as through an SS7 backbone of a wireless network or through theInternet.

Additionally, each of the base stations 34A and 34B may be part of apaging network but are preferably part of a cellular network. Either oneor both of base stations 34A or 34B may page the paging transceiver andeither one or both of the base stations 34A or 34B may deliver thecontents of messages to the paging transceiver. Each of the systems 30A,30B, and 30C may store messages on behalf of a user with the messagesbeing of the same or different types. Furthermore, the messages storedwithin a single system 30 may be all the same type or may differ fromeach other.

As an example, system 30A may store voice mail messages and emailmessages directed to the user's office, system 30B may store voice mailmessages directed to the user's home, and system 30C may store audiomessages. The base station 34A acts as a clearinghouse for all messagesdelivered to the user to any of the systems 30 and pages the pagingtransceiver 100 whenever a message is received. Thus, when a voice mailmessage or email message is received at system 30A, the system 30Adelivers a page to base station 34A which is then delivered to pagingtransceiver 100. When a voice message is received at system 30B, thesystem 30B sends information about the message to system 30A and system30A then delivers a page to base station 34A for delivering the page tothe paging transceiver 100. Similarly, when system 30C has an audiomessage it notifies system 30A and system 30A acts to have the pagedelivered to the paging transceiver 100.

An example of the data transmission 201 sent from system 30B or 30C tosystem 30A is shown in FIG. 11. The data transmission 201 includessystem ID information for identifying the system 30 from a potentialplurality of systems 30. The system ID information may be an addresscode or may comprise the telephone number of the system 30 and may beautomatically captured by system 30A, such as from Caller ID or fromDNIS information. The data message 201 also identifies the pagingtransceiver(s) 100, such as with an address code or MIN. For manysystems 30, the message or information stored will often be for a singleuser whereby the transceiver ID would be the address code or MIN forthat single paging transceiver 100. For other systems 30, however, thesystem 30 may want to broadcast a single message to a plurality ofpaging transceivers 100 whereby the transceiver ID may be a code thatidentifies a predefined group of paging transceivers 100.

The data transmission 201 also includes message information. The messageinformation includes information identifying the message and preferablyalso includes information specifying the type of the message, the lengthof the message, and the message priority. The message identification mayidentify the message with a unique code, such as a number, or mayspecify the address in system 30 for the message. The message typeadvantageously indicates whether the message is a voice message, emailmessage, audio message, video message, or text message. The messagelength indicates the size of the message and the message priorityindicates the priority level of the message. For instance, the user candesignate priorities based upon the telephone number of the callerleaving the message or the priority may be set by the caller. Althoughthe data transmission 201 preferably includes this information, the datatransmission 201 may include additional or fewer fields than the exampleprovided in FIG. 11.

The data transmission 201 also includes additional information that maybe relayed and presented to the user. For instance, for many systems 30that receive and store messages on behalf of the user, the additionaldescriptive information preferably comprises a return address foridentifying the caller's telephone number to inform the user as to wholeft the message. For other systems 30 which may generate their owninformation, the additional information preferably describes theinformation available to the user. For instance, for a system 30 thatallows users to sample songs, the additional information would indicatethe title and the artist of the song and may also specify the cost toretrieve and play the song. Other uses of the additional informationwill be apparent to those skilled in the art.

The page sent to the paging transceiver 100 includes most, if not all,of the data transmission 201. The information transmitted to the pagingtransceiver 100, with reference to FIG. 7, may be inserted into a shortmessage transmitted to the user at step 98. From the system IDinformation, the paging transceiver 100 can determine which system 30 itneeds to respond to in order to act upon a message. For instance, system30A may page the paging transceiver 100 and indicate that system 30B hasa stored message. If the user selects the retrieve message function,then the paging transceiver 100 can contact system 30B through basestation 34B to retrieve the desired message. The paging transceiver 100as discussed above may instead respond to base station 34A to retrievethe message and base station 34A would communicate with system 30B toretrieve or otherwise act upon the message.

The message information is used by the paging transceiver 100 to informthe user of the message or information stored at the system 30. Themessage type, length, priority, and additional descriptive material maybe displayed or otherwise indicated to the user at the pagingtransceiver 100. From this information, the user can decide what type ofaction to take upon the message or information at the system 30.

As described with reference to FIG. 9, a call to the system 30 may berequired in order for the paging transceiver 100 to perform a desiredfunction. If a call is required, the paging transceiver 100 relaysinformation in the data transmission 201 to the system 30. If the pagingtransceiver 100 responds to a system 30 other than the one storing themessage or information, the paging transceiver 100 identifies the system30 storing the message or information and also identifies the message.As discussed above, the message may be identified in a number of ways,such as with a message code or by specifying the location in memorywhere the message is stored. The call to the system 30 wouldautomatically provide the transceiver identification information to thesystem 30, although the paging transceiver 100 could provide thisinformation with the other information provided to the system 30.

Upon receiving a call from the paging transceiver 100, the system 30reads the transceiver identification and message information to find theinformation requested by the paging transceiver 100. The informationobtained from the paging transceiver 100 at the system 30 and thetransfer of the requested information to the paging transceiver occursat step 135 in FIG. 9.

The system 200 can present substantial cost savings to conventionalpaging system& With a conventional paging system, the entire message istransmitted to the location of the paging transceiver 100. For instance,if the user's home base is in Chapel Hill, N.C., and the messageoriginates in Chicago, Ill., then the message is typically sent over thePSTN 35 to the home base. With nationwide paging, the user may havetraveled to San Diego, Calif. whereby the home base would then send theentire message from Chapel Hill to San Diego. With system 200, on theother hand, only the data transmission 201 is transmitted from Chicagoto Chapel Hill and from Chapel Hill to San Diego. The actual message, incontrast, is sent directly from the storage facility in Chicago to SanDiego, thereby reducing charges associated with the transfer betweenChicago and Chapel Hill. Moreover, the data transmissions 201 betweensystems 30 may occur over the Internet. These transmissions, forinstance, may be formatted according to the Voice Profile for InternetMail (VPIM) and the addresses of the transceivers 100 may be determinedfrom an open directory service, such as the Lightweight Directory AccessProtocol (LDAP) or X.500.

The systems 30 and 200 allow a user to easily manage the multitude ofmessages that are commonly received every day. Conventionally, a userwould have to call in to the office voice mail to retrieve voicemessages, call home to retrieve voice messages sent to the house, andconnect with the computer network at the office to retrieve emailmessages. Although paging systems have been used to notify a user that avoice mail message or other message has been received, the user wouldstill have to call in to a separate system to actually retrieve themessage. The system 200, on the other hand, enables a user to benotified of all messages, regardless of their type and regardless oftheir location and furthermore allows the user to selectively retrieve,save, erase or perform other functions on the messages. The systems 30and 200 and paging transceiver 100, moreover, allow the user to exercisecontrol over the remotely stored messages; the user can selectivelystore, save, retrieve, erase, forward, send or otherwise performoperations on messages stored at a remote location.

The forgoing description of the preferred embodiments of the inventionhas been presented only for the purpose of illustration and descriptionand is not intended to be exhaustive or to limit the invention to theprecise forms disclosed. Many modifications and variations are possiblein light of the above teaching.

The embodiments were chosen and described in order to explain theprinciples of the invention and their practical application so as toenable others skilled in the art to utilize the invention and variousembodiments and with various modifications as are suited to theparticular use contemplated.

What is claimed is:
 1. A wireless communication device that transmits data to and receives data from a mobile communication system, comprising: a radio receiver that receives a notification message comprising an identifier that uniquely identifies information stored in a system remote from the wireless communication device, wherein the substance of the information is not included in the notification message; a user interface including at least a display and manual input device that receives from a user of the wireless communication device an input indicating that the information identifier should be sent to a specified destination; a processor coupled to the user interface and that generates a request message in response to the user input; and a transmitter coupled to the processor and that transmits the request message to the remote system, wherein the remote system is caused to transmit the information identifier to the specified destination in response to receiving the request message.
 2. The wireless communication device of claim 1, wherein the processor delays the transmitter from sending the request message until a call is in progress.
 3. The wireless communication device of claim 2, wherein the processor initiates a call after the user interface receives from the user an input indicating that a call should be initiated.
 4. The wireless communication device of claim 1, wherein the notification message also includes an address signal, wherein the address signal is associated with only the wireless communication device.
 5. The wireless communication device of claim 1 wherein the request message includes information that identifies the specified destination.
 6. The wireless communication device of claim 1 wherein the radio receiver, user interface, processor and transmitter comprise a cellular telephone.
 7. The wireless communication device of claim 1 wherein the radio receiver receives a notification that uniquely identifies a message stored in a system remote from the wireless communication device, wherein no content of the remotely stored message is included in the notification.
 8. The wireless communication device of claim 7 wherein the notification identifies characteristics about the remotely stored message.
 9. The wireless communication device of claim 1, wherein the notification message also includes at least one characteristic of the information.
 10. The wireless communication device of claim 9, wherein the characteristic includes the type of information.
 11. The wireless communication device of claim 9, wherein the characteristic includes the amount of information.
 12. The wireless communication device of claim 9, wherein the characteristic includes the subject of the information.
 13. The wireless communication device of claim 9, wherein the characteristic includes an indication of the sender of the information.
 14. A wireless communication device that transmits data to and receives data from a mobile communication system, comprising: a radio receiver coupled to an antenna and (a) that receives a notification message including a message identifier that uniquely identifies a message stored in a system remote from the wireless communication device, wherein the content of the message is not included in the notification message, and (b) that receives the message identified by the message identifier; a user interface including a display and manual and audible input systems, and that receives from a user of the wireless communication device a forward command indicating that the message should be forwarded to a recipient; a transmitter coupled to the antenna and that transmits information to the remote system; and a controller including a processor coupled to the user interface and programmed to determine whether the message is currently stored in the remote system, and wherein the controller directs the transmitter to transmit the message and the forward command to the remote system if the processor determines that the message is not currently stored in the remote system, or directs the transmitter to transmit to the remote system (a) an identifier for locating the message stored in the system and (b) the forward command if the processor determines that the message is currently stored in the remote system.
 15. The wireless communication device of claim 14, wherein the controller determines whether the message is stored within the remote system by generating a message status request, directing the transmitter to transmit the message status request to the remote system, and receiving a message status response from the remote system, wherein the message status response indicates whether the message is stored within the remote system.
 16. The wireless communication device of claim 14, wherein the controller delays the transmitter from sending the forward command until a call is in progress.
 17. The wireless communication device of claim 16, wherein the controller initiates a call after the user interface receives an input indicating that a call should be initiated.
 18. The wireless communication device of claim 14, wherein the notification message also includes an address signal, wherein the address signal is associated with only the wireless communication device.
 19. The wireless communication device of claim 14, wherein the message identifier also includes at least one characteristic of the information.
 20. The wireless communication device of claim 19, wherein the characteristic includes the type of message.
 21. The wireless communication device of claim 19, wherein the characteristic includes the size of the messages
 22. The wireless communication device of claim 19, wherein the characteristic includes the subject of the message.
 23. The wireless communication device of claim 19, wherein the characteristic includes an indication of the sender of the message.
 24. A method of operating a wireless communication device in a wireless communications network to transmit data to and receive data from a system remote from the wireless communication device, comprising of: receiving a notification from the remote system including an identifier that uniquely identifies a message stored in the remote system, wherein the content of the message is not included in the notification; receiving at the wireless communication device a command indicating that an operation should be carried out by the remote system on the message associated with the identifier; generating a request in response to receiving the command, the request message including a command corresponding to the operation to be carried out by the remote system; and transmitting from the wireless communication device through the wireless communication network the request and the message identifier to the remote system to request that the remote system performs the operation identified by the command on the message identified by the message identifier.
 25. The method of claim 24 wherein the notification is received at the wireless communication device from the remote system through the wireless communication network.
 26. The method of claim 24 wherein the operation to be performed by the remote system includes deleting the message stored at the remote system.
 27. The method of claim 24 wherein the operation to be performed by the remote system includes forwarding to a select destination the message stored at the remote system.
 28. The method of claim 24 wherein the operation to be performed by the remote system includes saving the message stored at the remote system.
 29. The method of claim 24 wherein the operation to be performed by the remote system includes retrieving the message stored at the remote system.
 30. The method of claim 24 wherein the operation to be performed by the remote system includes forwarding to a select destination all messages of a certain type.
 31. The method of claim 24 wherein the operation to be performed by the remote system includes flagging the message for later operation.
 32. The method of claim 24 wherein the operation to .be performed by the remote system includes replying to a message stored at the remote system.
 33. The method of claim 24, wherein the notification also includes at least one characteristic of the message.
 34. The method of claim 33, wherein the characteristic includes the type of message.
 35. The method of claim 33, wherein the characteristic includes the size of the message.
 36. The method of claim 33, wherein the characteristic includes the subject of the message.
 37. The method of claim 33, wherein the characteristic includes an indication of the sender of the message.
 38. In a communications network comprising a wireless communication device for transmitting data to and receiving data from a system remote from the transmitting and receiving device, a method performed by the transmitting and receiving device, comprising: receiving a notification message comprising a message identifier that identifies a message stored in the system, wherein the message is not included in the notification message; receiving from the system the message identified by the message identifier; receiving a command indicating that the message should be forwarded to a recipient; generating a forward message request message in response to the user interface receiving the command; determining whether the message is stored in the system; including the received message in the forward message request message only if it is determined that the message is not stored in the system; and including an identifier for locating the message stored in the system in the forward message request message if it is determined that the message is stored in the system.
 39. The method of claim 38, wherein the notification message also includes at least one characteristic of the message.
 40. The method of claim 39, wherein the characteristic includes the type of message.
 41. The method of claim 39, wherein the characteristic includes the size of the message.
 42. The method of claim 39, wherein the characteristic includes the subject of the message.
 43. The method of claim 39, wherein the characteristic includes an indication of the sender of the message. 